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After taking this course, you’ll be able to:

  • Describe the client-server structure of OPC Classic

  • Configure individual PCs as either a client and server to be able to share data across a network

  • Give definitions of Group and Update Frequency.

  • Describe the distinct elements of every OPC data transaction: Tagname, Value, Time Stamp, and Quality

  • List the hardware and software prerequisites necessary to implement OPC Classic

  • Give examples of common situations where OPC Classic is used to provide data across a control system network

Course curriculum

    1. 1. What is OPC Classic

    2. 2. What is Required to Use OPC Classic

    3. 3. How is OPC Classic configured

    4. 4. An Example of Using OPC Classic

About this course

  • 4 lessons
  • 0.5 hours of video content
  • Pro Course
  • Earn Certificate of Completion

Ideal for you if…

  • You are an engineer involved in networking multiple PCs, PLCs, and other ethernet- connected devices together over a common network

  • You are interested in how ethernet-connected devices can share data with one another in a secure and reliable way


In this course, you will learn how OPC Classic can be used to exchange data between process control system devices and applications. OPC Classic is a client-server based application. An OPC Server, such as a PLC, provides access to the data in the PLC by exposing its tag database to an OPC client, such as an HMI application.

The method for configuring the client and server applications is presented through the use of examples, using an OPC simulation server. The concepts of Tagname, Value, Time Stamp,and Quality for each piece of data shared are developed along with Data Groups and update frequencies.

The OPC server simulator and various client applications are used to demonstrate the configuration and execution of data exchange between PC stations and devices, such as PLCs. Finally, collecting data from an OPC server in Microsoft Excel is demonstrated.

Prepare for better pay & bigger responsibility

Testimonial title

Marcin Trojak

From my experience, I have to say that RealPars is the most professional online training program out there. The instructors are easy to follow and clearly explain PLC theories with excellent supporting visuals and real-life application examples. I like that they provide a summary after each lesson that brings together all the information and makes it easier to retain. Plus, I can train anytime, anywhere. I’m a maintenance apprentice right now, but when I complete RealPars training I’ll be ready to go after the PLC programming jobs I want.

Mohammad Khabazi

I work on electrical and instrument maintenance now, but my goal is to become a full-time PLC programmer. University courses take too much money and time. The RealPars video training method is great…the instructors are all experts and speak clearly so they keep my interest and are easy to follow. I’m eager to gain even more PLC expertise as new content is added.

Meet your instructor

Scott Sommer, PE, CAP

Scott Sommer has worked in the automation industry for over 37 years. In addition to his full-time job as Director, Automation Engineering Professional Development at Horizon Controls Group, Scott is proud to help develop the next generation of automation engineers. In his free time, he’s a RealPars instructor and an ISA trainer.

Here’s why you’ll succeed

  • One-on-one support

    Stuck or have a question? You get unlimited support from our team of proven PLC programming experts.

  • Laser-focused lessons

    We only teach you exactly what you need to know to master a PLC course. No fluff, filler, or wasting your time.

  • Experienced instructors

    All PLC training courses include step-by-step instructions from the world’s best so you can join their ranks and gain an unfair advantage.

The RealPars guarantee

  • Suited for all skill levels

    we’ll help you get the skills you need to stand out and get hired!

  • Learn practical skills

    You can immediately apply learnings and improve your results.

Start learning now

You'll get access to this course and ultimate access to the rest of the courses in the library.


  • Can I get a certificate for this course?

    Yes. RealPars will issue a Certificate of Completion (certified by RealPars) when you complete the course.

  • What is the required software?

    - Matricon OPC Explorer
    - Matrikon OPC Server for Simulation
    - OPC Test (from Rockwell Automation)

  • Can my employer purchase a course for me?

    Yes. Most people enroll individually, and then submit their receipt to their employer for reimbursement. However, if your employer has a tuition budget and wants to train 5 people or more, you can send us an email at [email protected] and we will help you with bulk signup.

  • Can I register for a course if I am working full time?

    Of course. All of our course content is pre-recorded, so you can work and study on your own time.

  • Do I have to travel to take this course?

    Nope! All our courses are offered online, so you can take them from anywhere in the world. All you need is a high-speed internet connection and the applicable software for your course.